From: Matthias Schiffer Date: Sat, 7 May 2016 00:07:51 +0200 Subject: kernel: backport spi-nor driver from 4.4.9 diff --git a/target/linux/ar71xx/patches-3.18/407-mtd-m25p80-allow-to-pass-probe-types-via-platform-data.patch b/target/linux/ar71xx/patches-3.18/407-mtd-m25p80-allow-to-pass-probe-types-via-platform-data.patch index 568f5161b1e4639c005577ea46c2e0411f95ec7c..6a9132032ff1cefae213464d3212ef0d4e4b8011 100644 --- a/target/linux/ar71xx/patches-3.18/407-mtd-m25p80-allow-to-pass-probe-types-via-platform-data.patch +++ b/target/linux/ar71xx/patches-3.18/407-mtd-m25p80-allow-to-pass-probe-types-via-platform-data.patch @@ -1,11 +1,11 @@ --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -246,7 +246,9 @@ static int m25p_probe(struct spi_device +@@ -229,7 +229,9 @@ static int m25p_probe(struct spi_device ppdata.of_node = spi->dev.of_node; -- return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, -+ return mtd_device_parse_register(&flash->mtd, +- return mtd_device_parse_register(&nor->mtd, NULL, &ppdata, ++ return mtd_device_parse_register(&nor->mtd, + data ? data->part_probes : NULL, + &ppdata, data ? data->parts : NULL, diff --git a/target/linux/ar71xx/patches-3.18/412-mtd-m25p80-zero-partition-parser-data.patch b/target/linux/ar71xx/patches-3.18/412-mtd-m25p80-zero-partition-parser-data.patch index d51694d9fd2d6fa5a519ce27108c964b1b6f32f8..175acf630e0d0437936066b51ea086cf39740b30 100644 --- a/target/linux/ar71xx/patches-3.18/412-mtd-m25p80-zero-partition-parser-data.patch +++ b/target/linux/ar71xx/patches-3.18/412-mtd-m25p80-zero-partition-parser-data.patch @@ -1,10 +1,10 @@ --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -244,6 +244,7 @@ static int m25p_probe(struct spi_device +@@ -227,6 +227,7 @@ static int m25p_probe(struct spi_device if (ret) return ret; + memset(&ppdata, '\0', sizeof(ppdata)); ppdata.of_node = spi->dev.of_node; - return mtd_device_parse_register(&flash->mtd, + return mtd_device_parse_register(&nor->mtd, diff --git a/target/linux/ar71xx/patches-3.18/462-mtd-m25p80-set-spi-transfer-type.patch b/target/linux/ar71xx/patches-3.18/462-mtd-m25p80-set-spi-transfer-type.patch index 3320e5b845bdf2843f32e52b5b620ce880fd4e96..11bf9ff71b609b03239179bcd8977c2202f5c8cf 100644 --- a/target/linux/ar71xx/patches-3.18/462-mtd-m25p80-set-spi-transfer-type.patch +++ b/target/linux/ar71xx/patches-3.18/462-mtd-m25p80-set-spi-transfer-type.patch @@ -1,6 +1,6 @@ --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -142,10 +142,12 @@ static int m25p80_read(struct spi_nor *n +@@ -137,10 +137,12 @@ static int m25p80_read(struct spi_nor *n flash->command[0] = nor->read_opcode; m25p_addr2cmd(nor, from, flash->command); diff --git a/target/linux/ar71xx/patches-3.18/464-spi-ath79-fix-fast-flash-read.patch b/target/linux/ar71xx/patches-3.18/464-spi-ath79-fix-fast-flash-read.patch index e48665d6a09fdcc77d027274016c24fe78e8d95a..758d23181d49eff6afeb35b1fbbd8f36efa2cfca 100644 --- a/target/linux/ar71xx/patches-3.18/464-spi-ath79-fix-fast-flash-read.patch +++ b/target/linux/ar71xx/patches-3.18/464-spi-ath79-fix-fast-flash-read.patch @@ -1,6 +1,6 @@ --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -142,6 +142,9 @@ static int m25p80_read(struct spi_nor *n +@@ -137,6 +137,9 @@ static int m25p80_read(struct spi_nor *n flash->command[0] = nor->read_opcode; m25p_addr2cmd(nor, from, flash->command); @@ -25,7 +25,7 @@ while (len--) { --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h -@@ -637,6 +637,7 @@ struct spi_transfer { +@@ -633,6 +633,7 @@ struct spi_transfer { u16 delay_usecs; u32 speed_hz; enum spi_transfer_type type; diff --git a/target/linux/brcm63xx/patches-3.18/202-MTD-DEVICES-m25p80-use-parsers-if-provided-in-flash-.patch b/target/linux/brcm63xx/patches-3.18/202-MTD-DEVICES-m25p80-use-parsers-if-provided-in-flash-.patch index b94969406deed4d6b8d51789235cd3e63e432c7c..be62e6789c883a5854a7bc9fae6dcc882090800f 100644 --- a/target/linux/brcm63xx/patches-3.18/202-MTD-DEVICES-m25p80-use-parsers-if-provided-in-flash-.patch +++ b/target/linux/brcm63xx/patches-3.18/202-MTD-DEVICES-m25p80-use-parsers-if-provided-in-flash-.patch @@ -11,12 +11,12 @@ Signed-off-by: Jonas Gorski --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -246,7 +246,8 @@ static int m25p_probe(struct spi_device +@@ -229,7 +229,8 @@ static int m25p_probe(struct spi_device ppdata.of_node = spi->dev.of_node; -- return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, -+ return mtd_device_parse_register(&flash->mtd, +- return mtd_device_parse_register(&nor->mtd, NULL, &ppdata, ++ return mtd_device_parse_register(&nor->mtd, + data ? data->part_probe_types : NULL, &ppdata, data ? data->parts : NULL, data ? data->nr_parts : 0); diff --git a/target/linux/brcm63xx/patches-3.18/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch b/target/linux/brcm63xx/patches-3.18/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch index 740fb2dafc4ece9e0c88630a1ad2b800f763ed59..3877442d21eb8f6a9fdacc415c60be78d61b3c5f 100644 --- a/target/linux/brcm63xx/patches-3.18/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch +++ b/target/linux/brcm63xx/patches-3.18/203-MTD-DEVICES-m25p80-add-support-for-limiting-reads.patch @@ -11,15 +11,15 @@ Signed-off-by: Jonas Gorski --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -32,6 +32,7 @@ struct m25p { +@@ -31,6 +31,7 @@ + struct m25p { struct spi_device *spi; struct spi_nor spi_nor; - struct mtd_info mtd; + int max_transfer_len; u8 command[MAX_CMD_SIZE]; }; -@@ -121,7 +122,7 @@ static inline unsigned int m25p80_rx_nbi +@@ -119,7 +120,7 @@ static inline unsigned int m25p80_rx_nbi * Read an address range from the nor chip. The address range * may be any size provided it is within the physical boundaries. */ @@ -28,7 +28,7 @@ Signed-off-by: Jonas Gorski size_t *retlen, u_char *buf) { struct m25p *flash = nor->priv; -@@ -157,6 +158,29 @@ static int m25p80_read(struct spi_nor *n +@@ -152,6 +153,29 @@ static int m25p80_read(struct spi_nor *n return 0; } @@ -58,7 +58,7 @@ Signed-off-by: Jonas Gorski static int m25p80_erase(struct spi_nor *nor, loff_t offset) { struct m25p *flash = nor->priv; -@@ -240,6 +264,9 @@ static int m25p_probe(struct spi_device +@@ -223,6 +247,9 @@ static int m25p_probe(struct spi_device else flash_name = spi->modalias; diff --git a/target/linux/brcm63xx/patches-3.18/414-MTD-m25p80-allow-passing-pp_data.patch b/target/linux/brcm63xx/patches-3.18/414-MTD-m25p80-allow-passing-pp_data.patch index b7bf57f697961a06d1ccef93ce4474f34f5e03e4..e421e9adbefb45fa837f686e253636781842fa7e 100644 --- a/target/linux/brcm63xx/patches-3.18/414-MTD-m25p80-allow-passing-pp_data.patch +++ b/target/linux/brcm63xx/patches-3.18/414-MTD-m25p80-allow-passing-pp_data.patch @@ -10,7 +10,7 @@ Subject: [PATCH 64/79] MTD: m25p80: allow passing pp_data --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c -@@ -267,6 +267,9 @@ static int m25p_probe(struct spi_device +@@ -250,6 +250,9 @@ static int m25p_probe(struct spi_device if (data) flash->max_transfer_len = data->max_transfer_len; diff --git a/target/linux/generic/patches-3.18/043-mtd_GD25Q128B_support_backport_from_3.19.patch b/target/linux/generic/patches-3.18/043-mtd_GD25Q128B_support_backport_from_3.19.patch deleted file mode 100644 index 4d0403bfd8a4a076cc9e91349463593adb79047c..0000000000000000000000000000000000000000 --- a/target/linux/generic/patches-3.18/043-mtd_GD25Q128B_support_backport_from_3.19.patch +++ /dev/null @@ -1,10 +0,0 @@ ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -510,6 +510,7 @@ static const struct spi_device_id spi_no - /* GigaDevice */ - { "gd25q32", INFO(0xc84016, 0, 64 * 1024, 64, SECT_4K) }, - { "gd25q64", INFO(0xc84017, 0, 64 * 1024, 128, SECT_4K) }, -+ { "gd25q128", INFO(0xc84018, 0, 64 * 1024, 256, SECT_4K) }, - - /* Intel/Numonyx -- xxxs33b */ - { "160s33b", INFO(0x898911, 0, 64 * 1024, 32, 0) }, diff --git a/target/linux/generic/patches-3.18/093-m25p80_spi-nor_update_to_4.4.9.patch b/target/linux/generic/patches-3.18/093-m25p80_spi-nor_update_to_4.4.9.patch new file mode 100644 index 0000000000000000000000000000000000000000..5f74d3a07ba62c9e1da0a0b2aef8abe309efdbb9 --- /dev/null +++ b/target/linux/generic/patches-3.18/093-m25p80_spi-nor_update_to_4.4.9.patch @@ -0,0 +1,1579 @@ +--- a/drivers/mtd/devices/m25p80.c ++++ b/drivers/mtd/devices/m25p80.c +@@ -31,7 +31,6 @@ + struct m25p { + struct spi_device *spi; + struct spi_nor spi_nor; +- struct mtd_info mtd; + u8 command[MAX_CMD_SIZE]; + }; + +@@ -62,8 +61,7 @@ static int m25p_cmdsz(struct spi_nor *no + return 1 + nor->addr_width; + } + +-static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len, +- int wr_en) ++static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len) + { + struct m25p *flash = nor->priv; + struct spi_device *spi = flash->spi; +@@ -128,13 +126,10 @@ static int m25p80_read(struct spi_nor *n + struct spi_device *spi = flash->spi; + struct spi_transfer t[2]; + struct spi_message m; +- int dummy = nor->read_dummy; +- int ret; ++ unsigned int dummy = nor->read_dummy; + +- /* Wait till previous write/erase is done. */ +- ret = nor->wait_till_ready(nor); +- if (ret) +- return ret; ++ /* convert the dummy cycles to the number of bytes */ ++ dummy /= 8; + + spi_message_init(&m); + memset(t, 0, (sizeof t)); +@@ -160,20 +155,9 @@ static int m25p80_read(struct spi_nor *n + static int m25p80_erase(struct spi_nor *nor, loff_t offset) + { + struct m25p *flash = nor->priv; +- int ret; + + dev_dbg(nor->dev, "%dKiB at 0x%08x\n", +- flash->mtd.erasesize / 1024, (u32)offset); +- +- /* Wait until finished previous write command. */ +- ret = nor->wait_till_ready(nor); +- if (ret) +- return ret; +- +- /* Send write enable, then erase commands. */ +- ret = nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0); +- if (ret) +- return ret; ++ flash->spi_nor.mtd.erasesize / 1024, (u32)offset); + + /* Set up command buffer. */ + flash->command[0] = nor->erase_opcode; +@@ -215,11 +199,10 @@ static int m25p_probe(struct spi_device + nor->read_reg = m25p80_read_reg; + + nor->dev = &spi->dev; +- nor->mtd = &flash->mtd; ++ nor->flash_node = spi->dev.of_node; + nor->priv = flash; + + spi_set_drvdata(spi, flash); +- flash->mtd.priv = nor; + flash->spi = spi; + + if (spi->mode & SPI_RX_QUAD) +@@ -228,7 +211,7 @@ static int m25p_probe(struct spi_device + mode = SPI_NOR_DUAL; + + if (data && data->name) +- flash->mtd.name = data->name; ++ nor->mtd.name = data->name; + + /* For some (historical?) reason many platforms provide two different + * names in flash_platform_data: "name" and "type". Quite often name is +@@ -246,7 +229,7 @@ static int m25p_probe(struct spi_device + + ppdata.of_node = spi->dev.of_node; + +- return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, ++ return mtd_device_parse_register(&nor->mtd, NULL, &ppdata, + data ? data->parts : NULL, + data ? data->nr_parts : 0); + } +@@ -257,64 +240,68 @@ static int m25p_remove(struct spi_device + struct m25p *flash = spi_get_drvdata(spi); + + /* Clean up MTD stuff. */ +- return mtd_device_unregister(&flash->mtd); ++ return mtd_device_unregister(&flash->spi_nor.mtd); + } + +- + /* +- * XXX This needs to be kept in sync with spi_nor_ids. We can't share +- * it with spi-nor, because if this is built as a module then modpost +- * won't be able to read it and add appropriate aliases. ++ * Do NOT add to this array without reading the following: ++ * ++ * Historically, many flash devices are bound to this driver by their name. But ++ * since most of these flash are compatible to some extent, and their ++ * differences can often be differentiated by the JEDEC read-ID command, we ++ * encourage new users to add support to the spi-nor library, and simply bind ++ * against a generic string here (e.g., "jedec,spi-nor"). ++ * ++ * Many flash names are kept here in this list (as well as in spi-nor.c) to ++ * keep them available as module aliases for existing platforms. + */ + static const struct spi_device_id m25p_ids[] = { +- {"at25fs010"}, {"at25fs040"}, {"at25df041a"}, {"at25df321a"}, +- {"at25df641"}, {"at26f004"}, {"at26df081a"}, {"at26df161a"}, +- {"at26df321"}, {"at45db081d"}, +- {"en25f32"}, {"en25p32"}, {"en25q32b"}, {"en25p64"}, +- {"en25q64"}, {"en25qh128"}, {"en25qh256"}, +- {"f25l32pa"}, +- {"mr25h256"}, {"mr25h10"}, +- {"gd25q32"}, {"gd25q64"}, +- {"160s33b"}, {"320s33b"}, {"640s33b"}, +- {"mx25l2005a"}, {"mx25l4005a"}, {"mx25l8005"}, {"mx25l1606e"}, +- {"mx25l3205d"}, {"mx25l3255e"}, {"mx25l6405d"}, {"mx25l12805d"}, +- {"mx25l12855e"},{"mx25l25635e"},{"mx25l25655e"},{"mx66l51235l"}, +- {"mx66l1g55g"}, +- {"n25q064"}, {"n25q128a11"}, {"n25q128a13"}, {"n25q256a"}, +- {"n25q512a"}, {"n25q512ax3"}, {"n25q00"}, +- {"pm25lv512"}, {"pm25lv010"}, {"pm25lq032"}, +- {"s25sl032p"}, {"s25sl064p"}, {"s25fl256s0"}, {"s25fl256s1"}, +- {"s25fl512s"}, {"s70fl01gs"}, {"s25sl12800"}, {"s25sl12801"}, +- {"s25fl129p0"}, {"s25fl129p1"}, {"s25sl004a"}, {"s25sl008a"}, +- {"s25sl016a"}, {"s25sl032a"}, {"s25sl064a"}, {"s25fl008k"}, +- {"s25fl016k"}, {"s25fl064k"}, +- {"sst25vf040b"},{"sst25vf080b"},{"sst25vf016b"},{"sst25vf032b"}, +- {"sst25vf064c"},{"sst25wf512"}, {"sst25wf010"}, {"sst25wf020"}, +- {"sst25wf040"}, +- {"m25p05"}, {"m25p10"}, {"m25p20"}, {"m25p40"}, +- {"m25p80"}, {"m25p16"}, {"m25p32"}, {"m25p64"}, +- {"m25p128"}, {"n25q032"}, ++ /* ++ * Entries not used in DTs that should be safe to drop after replacing ++ * them with "nor-jedec" in platform data. ++ */ ++ {"s25sl064a"}, {"w25x16"}, {"m25p10"}, {"m25px64"}, ++ ++ /* ++ * Entries that were used in DTs without "nor-jedec" fallback and should ++ * be kept for backward compatibility. ++ */ ++ {"at25df321a"}, {"at25df641"}, {"at26df081a"}, ++ {"mr25h256"}, ++ {"mx25l4005a"}, {"mx25l1606e"}, {"mx25l6405d"}, {"mx25l12805d"}, ++ {"mx25l25635e"},{"mx66l51235l"}, ++ {"n25q064"}, {"n25q128a11"}, {"n25q128a13"}, {"n25q512a"}, ++ {"s25fl256s1"}, {"s25fl512s"}, {"s25sl12801"}, {"s25fl008k"}, ++ {"s25fl064k"}, ++ {"sst25vf040b"},{"sst25vf016b"},{"sst25vf032b"},{"sst25wf040"}, ++ {"m25p40"}, {"m25p80"}, {"m25p16"}, {"m25p32"}, ++ {"m25p64"}, {"m25p128"}, ++ {"w25x80"}, {"w25x32"}, {"w25q32"}, {"w25q32dw"}, ++ {"w25q80bl"}, {"w25q128"}, {"w25q256"}, ++ ++ /* Flashes that can't be detected using JEDEC */ + {"m25p05-nonjedec"}, {"m25p10-nonjedec"}, {"m25p20-nonjedec"}, + {"m25p40-nonjedec"}, {"m25p80-nonjedec"}, {"m25p16-nonjedec"}, + {"m25p32-nonjedec"}, {"m25p64-nonjedec"}, {"m25p128-nonjedec"}, +- {"m45pe10"}, {"m45pe80"}, {"m45pe16"}, +- {"m25pe20"}, {"m25pe80"}, {"m25pe16"}, +- {"m25px16"}, {"m25px32"}, {"m25px32-s0"}, {"m25px32-s1"}, +- {"m25px64"}, {"m25px80"}, +- {"w25x10"}, {"w25x20"}, {"w25x40"}, {"w25x80"}, +- {"w25x16"}, {"w25x32"}, {"w25q32"}, {"w25q32dw"}, +- {"w25x64"}, {"w25q64"}, {"w25q80"}, {"w25q80bl"}, +- {"w25q128"}, {"w25q256"}, {"cat25c11"}, +- {"cat25c03"}, {"cat25c09"}, {"cat25c17"}, {"cat25128"}, ++ + { }, + }; + MODULE_DEVICE_TABLE(spi, m25p_ids); + ++static const struct of_device_id m25p_of_table[] = { ++ /* ++ * Generic compatibility for SPI NOR that can be identified by the ++ * JEDEC READ ID opcode (0x9F). Use this, if possible. ++ */ ++ { .compatible = "jedec,spi-nor" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, m25p_of_table); + + static struct spi_driver m25p80_driver = { + .driver = { + .name = "m25p80", +- .owner = THIS_MODULE, ++ .of_match_table = m25p_of_table, + }, + .id_table = m25p_ids, + .probe = m25p_probe, +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -16,19 +16,63 @@ + #include + #include + #include ++#include + +-#include + #include + #include + #include + #include + + /* Define max times to check status register before we give up. */ +-#define MAX_READY_WAIT_JIFFIES (40 * HZ) /* M25P16 specs 40s max chip erase */ + +-#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16) ++/* ++ * For everything but full-chip erase; probably could be much smaller, but kept ++ * around for safety for now ++ */ ++#define DEFAULT_READY_WAIT_JIFFIES (40UL * HZ) ++ ++/* ++ * For full-chip erase, calibrated to a 2MB flash (M25P16); should be scaled up ++ * for larger flash ++ */ ++#define CHIP_ERASE_2MB_READY_WAIT_JIFFIES (40UL * HZ) ++ ++#define SPI_NOR_MAX_ID_LEN 6 ++ ++struct flash_info { ++ char *name; ++ ++ /* ++ * This array stores the ID bytes. ++ * The first three bytes are the JEDIC ID. ++ * JEDEC ID zero means "no ID" (mostly older chips). ++ */ ++ u8 id[SPI_NOR_MAX_ID_LEN]; ++ u8 id_len; ++ ++ /* The size listed here is what works with SPINOR_OP_SE, which isn't ++ * necessarily called a "sector" by the vendor. ++ */ ++ unsigned sector_size; ++ u16 n_sectors; ++ ++ u16 page_size; ++ u16 addr_width; ++ ++ u16 flags; ++#define SECT_4K 0x01 /* SPINOR_OP_BE_4K works uniformly */ ++#define SPI_NOR_NO_ERASE 0x02 /* No erase command needed */ ++#define SST_WRITE 0x04 /* use SST byte programming */ ++#define SPI_NOR_NO_FR 0x08 /* Can't do fastread */ ++#define SECT_4K_PMC 0x10 /* SPINOR_OP_BE_4K_PMC works uniformly */ ++#define SPI_NOR_DUAL_READ 0x20 /* Flash supports Dual Read */ ++#define SPI_NOR_QUAD_READ 0x40 /* Flash supports Quad Read */ ++#define USE_FSR 0x80 /* use flag status register */ ++}; + +-static const struct spi_device_id *spi_nor_match_id(const char *name); ++#define JEDEC_MFR(info) ((info)->id[0]) ++ ++static const struct flash_info *spi_nor_match_id(const char *name); + + /* + * Read the status register, returning its value in the location +@@ -98,7 +142,7 @@ static inline int spi_nor_read_dummy_cyc + case SPI_NOR_FAST: + case SPI_NOR_DUAL: + case SPI_NOR_QUAD: +- return 1; ++ return 8; + case SPI_NOR_NORMAL: + return 0; + } +@@ -112,7 +156,7 @@ static inline int spi_nor_read_dummy_cyc + static inline int write_sr(struct spi_nor *nor, u8 val) + { + nor->cmd_buf[0] = val; +- return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0); ++ return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1); + } + + /* +@@ -121,7 +165,7 @@ static inline int write_sr(struct spi_no + */ + static inline int write_enable(struct spi_nor *nor) + { +- return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0); ++ return nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0); + } + + /* +@@ -129,7 +173,7 @@ static inline int write_enable(struct sp + */ + static inline int write_disable(struct spi_nor *nor) + { +- return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0, 0); ++ return nor->write_reg(nor, SPINOR_OP_WRDI, NULL, 0); + } + + static inline struct spi_nor *mtd_to_spi_nor(struct mtd_info *mtd) +@@ -138,23 +182,24 @@ static inline struct spi_nor *mtd_to_spi + } + + /* Enable/disable 4-byte addressing mode. */ +-static inline int set_4byte(struct spi_nor *nor, u32 jedec_id, int enable) ++static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info, ++ int enable) + { + int status; + bool need_wren = false; + u8 cmd; + +- switch (JEDEC_MFR(jedec_id)) { +- case CFI_MFR_ST: /* Micron, actually */ ++ switch (JEDEC_MFR(info)) { ++ case SNOR_MFR_MICRON: + /* Some Micron need WREN command; all will accept it */ + need_wren = true; +- case CFI_MFR_MACRONIX: +- case 0xEF /* winbond */: ++ case SNOR_MFR_MACRONIX: ++ case SNOR_MFR_WINBOND: + if (need_wren) + write_enable(nor); + + cmd = enable ? SPINOR_OP_EN4B : SPINOR_OP_EX4B; +- status = nor->write_reg(nor, cmd, NULL, 0, 0); ++ status = nor->write_reg(nor, cmd, NULL, 0); + if (need_wren) + write_disable(nor); + +@@ -162,63 +207,73 @@ static inline int set_4byte(struct spi_n + default: + /* Spansion style */ + nor->cmd_buf[0] = enable << 7; +- return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1, 0); ++ return nor->write_reg(nor, SPINOR_OP_BRWR, nor->cmd_buf, 1); + } + } +- +-static int spi_nor_wait_till_ready(struct spi_nor *nor) ++static inline int spi_nor_sr_ready(struct spi_nor *nor) + { +- unsigned long deadline; +- int sr; +- +- deadline = jiffies + MAX_READY_WAIT_JIFFIES; +- +- do { +- cond_resched(); ++ int sr = read_sr(nor); ++ if (sr < 0) ++ return sr; ++ else ++ return !(sr & SR_WIP); ++} + +- sr = read_sr(nor); +- if (sr < 0) +- break; +- else if (!(sr & SR_WIP)) +- return 0; +- } while (!time_after_eq(jiffies, deadline)); ++static inline int spi_nor_fsr_ready(struct spi_nor *nor) ++{ ++ int fsr = read_fsr(nor); ++ if (fsr < 0) ++ return fsr; ++ else ++ return fsr & FSR_READY; ++} + +- return -ETIMEDOUT; ++static int spi_nor_ready(struct spi_nor *nor) ++{ ++ int sr, fsr; ++ sr = spi_nor_sr_ready(nor); ++ if (sr < 0) ++ return sr; ++ fsr = nor->flags & SNOR_F_USE_FSR ? spi_nor_fsr_ready(nor) : 1; ++ if (fsr < 0) ++ return fsr; ++ return sr && fsr; + } + +-static int spi_nor_wait_till_fsr_ready(struct spi_nor *nor) ++/* ++ * Service routine to read status register until ready, or timeout occurs. ++ * Returns non-zero if error. ++ */ ++static int spi_nor_wait_till_ready_with_timeout(struct spi_nor *nor, ++ unsigned long timeout_jiffies) + { + unsigned long deadline; +- int sr; +- int fsr; ++ int timeout = 0, ret; + +- deadline = jiffies + MAX_READY_WAIT_JIFFIES; ++ deadline = jiffies + timeout_jiffies; ++ ++ while (!timeout) { ++ if (time_after_eq(jiffies, deadline)) ++ timeout = 1; ++ ++ ret = spi_nor_ready(nor); ++ if (ret < 0) ++ return ret; ++ if (ret) ++ return 0; + +- do { + cond_resched(); ++ } + +- sr = read_sr(nor); +- if (sr < 0) { +- break; +- } else if (!(sr & SR_WIP)) { +- fsr = read_fsr(nor); +- if (fsr < 0) +- break; +- if (fsr & FSR_READY) +- return 0; +- } +- } while (!time_after_eq(jiffies, deadline)); ++ dev_err(nor->dev, "flash operation timed out\n"); + + return -ETIMEDOUT; + } + +-/* +- * Service routine to read status register until ready, or timeout occurs. +- * Returns non-zero if error. +- */ +-static int wait_till_ready(struct spi_nor *nor) ++static int spi_nor_wait_till_ready(struct spi_nor *nor) + { +- return nor->wait_till_ready(nor); ++ return spi_nor_wait_till_ready_with_timeout(nor, ++ DEFAULT_READY_WAIT_JIFFIES); + } + + /* +@@ -228,19 +283,9 @@ static int wait_till_ready(struct spi_no + */ + static int erase_chip(struct spi_nor *nor) + { +- int ret; +- +- dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd->size >> 10)); ++ dev_dbg(nor->dev, " %lldKiB\n", (long long)(nor->mtd.size >> 10)); + +- /* Wait until finished previous write command. */ +- ret = wait_till_ready(nor); +- if (ret) +- return ret; +- +- /* Send write enable, then erase commands. */ +- write_enable(nor); +- +- return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0, 0); ++ return nor->write_reg(nor, SPINOR_OP_CHIP_ERASE, NULL, 0); + } + + static int spi_nor_lock_and_prep(struct spi_nor *nor, enum spi_nor_ops ops) +@@ -294,11 +339,28 @@ static int spi_nor_erase(struct mtd_info + + /* whole-chip erase? */ + if (len == mtd->size) { ++ unsigned long timeout; ++ ++ write_enable(nor); ++ + if (erase_chip(nor)) { + ret = -EIO; + goto erase_err; + } + ++ /* ++ * Scale the timeout linearly with the size of the flash, with ++ * a minimum calibrated to an old 2MB flash. We could try to ++ * pull these from CFI/SFDP, but these values should be good ++ * enough for now. ++ */ ++ timeout = max(CHIP_ERASE_2MB_READY_WAIT_JIFFIES, ++ CHIP_ERASE_2MB_READY_WAIT_JIFFIES * ++ (unsigned long)(mtd->size / SZ_2M)); ++ ret = spi_nor_wait_till_ready_with_timeout(nor, timeout); ++ if (ret) ++ goto erase_err; ++ + /* REVISIT in some cases we could speed up erasing large regions + * by using SPINOR_OP_SE instead of SPINOR_OP_BE_4K. We may have set up + * to use "small sector erase", but that's not always optimal. +@@ -307,6 +369,8 @@ static int spi_nor_erase(struct mtd_info + /* "sector"-at-a-time erase */ + } else { + while (len) { ++ write_enable(nor); ++ + if (nor->erase(nor, addr)) { + ret = -EIO; + goto erase_err; +@@ -314,9 +378,15 @@ static int spi_nor_erase(struct mtd_info + + addr += mtd->erasesize; + len -= mtd->erasesize; ++ ++ ret = spi_nor_wait_till_ready(nor); ++ if (ret) ++ goto erase_err; + } + } + ++ write_disable(nor); ++ + spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_ERASE); + + instr->state = MTD_ERASE_DONE; +@@ -330,152 +400,267 @@ erase_err: + return ret; + } + +-static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) ++static void stm_get_locked_range(struct spi_nor *nor, u8 sr, loff_t *ofs, ++ uint64_t *len) + { +- struct spi_nor *nor = mtd_to_spi_nor(mtd); +- uint32_t offset = ofs; +- uint8_t status_old, status_new; +- int ret = 0; ++ struct mtd_info *mtd = &nor->mtd; ++ u8 mask = SR_BP2 | SR_BP1 | SR_BP0; ++ int shift = ffs(mask) - 1; ++ int pow; ++ ++ if (!(sr & mask)) { ++ /* No protection */ ++ *ofs = 0; ++ *len = 0; ++ } else { ++ pow = ((sr & mask) ^ mask) >> shift; ++ *len = mtd->size >> pow; ++ *ofs = mtd->size - *len; ++ } ++} + +- ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_LOCK); +- if (ret) +- return ret; ++/* ++ * Return 1 if the entire region is locked, 0 otherwise ++ */ ++static int stm_is_locked_sr(struct spi_nor *nor, loff_t ofs, uint64_t len, ++ u8 sr) ++{ ++ loff_t lock_offs; ++ uint64_t lock_len; + +- /* Wait until finished previous command */ +- ret = wait_till_ready(nor); +- if (ret) +- goto err; ++ stm_get_locked_range(nor, sr, &lock_offs, &lock_len); ++ ++ return (ofs + len <= lock_offs + lock_len) && (ofs >= lock_offs); ++} ++ ++/* ++ * Lock a region of the flash. Compatible with ST Micro and similar flash. ++ * Supports only the block protection bits BP{0,1,2} in the status register ++ * (SR). Does not support these features found in newer SR bitfields: ++ * - TB: top/bottom protect - only handle TB=0 (top protect) ++ * - SEC: sector/block protect - only handle SEC=0 (block protect) ++ * - CMP: complement protect - only support CMP=0 (range is not complemented) ++ * ++ * Sample table portion for 8MB flash (Winbond w25q64fw): ++ * ++ * SEC | TB | BP2 | BP1 | BP0 | Prot Length | Protected Portion ++ * -------------------------------------------------------------------------- ++ * X | X | 0 | 0 | 0 | NONE | NONE ++ * 0 | 0 | 0 | 0 | 1 | 128 KB | Upper 1/64 ++ * 0 | 0 | 0 | 1 | 0 | 256 KB | Upper 1/32 ++ * 0 | 0 | 0 | 1 | 1 | 512 KB | Upper 1/16 ++ * 0 | 0 | 1 | 0 | 0 | 1 MB | Upper 1/8 ++ * 0 | 0 | 1 | 0 | 1 | 2 MB | Upper 1/4 ++ * 0 | 0 | 1 | 1 | 0 | 4 MB | Upper 1/2 ++ * X | X | 1 | 1 | 1 | 8 MB | ALL ++ * ++ * Returns negative on errors, 0 on success. ++ */ ++static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len) ++{ ++ struct mtd_info *mtd = &nor->mtd; ++ u8 status_old, status_new; ++ u8 mask = SR_BP2 | SR_BP1 | SR_BP0; ++ u8 shift = ffs(mask) - 1, pow, val; + + status_old = read_sr(nor); + +- if (offset < mtd->size - (mtd->size / 2)) +- status_new = status_old | SR_BP2 | SR_BP1 | SR_BP0; +- else if (offset < mtd->size - (mtd->size / 4)) +- status_new = (status_old & ~SR_BP0) | SR_BP2 | SR_BP1; +- else if (offset < mtd->size - (mtd->size / 8)) +- status_new = (status_old & ~SR_BP1) | SR_BP2 | SR_BP0; +- else if (offset < mtd->size - (mtd->size / 16)) +- status_new = (status_old & ~(SR_BP0 | SR_BP1)) | SR_BP2; +- else if (offset < mtd->size - (mtd->size / 32)) +- status_new = (status_old & ~SR_BP2) | SR_BP1 | SR_BP0; +- else if (offset < mtd->size - (mtd->size / 64)) +- status_new = (status_old & ~(SR_BP2 | SR_BP0)) | SR_BP1; +- else +- status_new = (status_old & ~(SR_BP2 | SR_BP1)) | SR_BP0; ++ /* SPI NOR always locks to the end */ ++ if (ofs + len != mtd->size) { ++ /* Does combined region extend to end? */ ++ if (!stm_is_locked_sr(nor, ofs + len, mtd->size - ofs - len, ++ status_old)) ++ return -EINVAL; ++ len = mtd->size - ofs; ++ } ++ ++ /* ++ * Need smallest pow such that: ++ * ++ * 1 / (2^pow) <= (len / size) ++ * ++ * so (assuming power-of-2 size) we do: ++ * ++ * pow = ceil(log2(size / len)) = log2(size) - floor(log2(len)) ++ */ ++ pow = ilog2(mtd->size) - ilog2(len); ++ val = mask - (pow << shift); ++ if (val & ~mask) ++ return -EINVAL; ++ /* Don't "lock" with no region! */ ++ if (!(val & mask)) ++ return -EINVAL; ++ ++ status_new = (status_old & ~mask) | val; + + /* Only modify protection if it will not unlock other areas */ +- if ((status_new & (SR_BP2 | SR_BP1 | SR_BP0)) > +- (status_old & (SR_BP2 | SR_BP1 | SR_BP0))) { +- write_enable(nor); +- ret = write_sr(nor, status_new); +- if (ret) +- goto err; ++ if ((status_new & mask) <= (status_old & mask)) ++ return -EINVAL; ++ ++ write_enable(nor); ++ return write_sr(nor, status_new); ++} ++ ++/* ++ * Unlock a region of the flash. See stm_lock() for more info ++ * ++ * Returns negative on errors, 0 on success. ++ */ ++static int stm_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len) ++{ ++ struct mtd_info *mtd = &nor->mtd; ++ uint8_t status_old, status_new; ++ u8 mask = SR_BP2 | SR_BP1 | SR_BP0; ++ u8 shift = ffs(mask) - 1, pow, val; ++ ++ status_old = read_sr(nor); ++ ++ /* Cannot unlock; would unlock larger region than requested */ ++ if (stm_is_locked_sr(nor, ofs - mtd->erasesize, mtd->erasesize, ++ status_old)) ++ return -EINVAL; ++ ++ /* ++ * Need largest pow such that: ++ * ++ * 1 / (2^pow) >= (len / size) ++ * ++ * so (assuming power-of-2 size) we do: ++ * ++ * pow = floor(log2(size / len)) = log2(size) - ceil(log2(len)) ++ */ ++ pow = ilog2(mtd->size) - order_base_2(mtd->size - (ofs + len)); ++ if (ofs + len == mtd->size) { ++ val = 0; /* fully unlocked */ ++ } else { ++ val = mask - (pow << shift); ++ /* Some power-of-two sizes are not supported */ ++ if (val & ~mask) ++ return -EINVAL; + } + +-err: +- spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK); +- return ret; ++ status_new = (status_old & ~mask) | val; ++ ++ /* Only modify protection if it will not lock other areas */ ++ if ((status_new & mask) >= (status_old & mask)) ++ return -EINVAL; ++ ++ write_enable(nor); ++ return write_sr(nor, status_new); + } + +-static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) ++/* ++ * Check if a region of the flash is (completely) locked. See stm_lock() for ++ * more info. ++ * ++ * Returns 1 if entire region is locked, 0 if any portion is unlocked, and ++ * negative on errors. ++ */ ++static int stm_is_locked(struct spi_nor *nor, loff_t ofs, uint64_t len) ++{ ++ int status; ++ ++ status = read_sr(nor); ++ if (status < 0) ++ return status; ++ ++ return stm_is_locked_sr(nor, ofs, len, status); ++} ++ ++static int spi_nor_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) + { + struct spi_nor *nor = mtd_to_spi_nor(mtd); +- uint32_t offset = ofs; +- uint8_t status_old, status_new; +- int ret = 0; ++ int ret; + +- ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_UNLOCK); ++ ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_LOCK); + if (ret) + return ret; + +- /* Wait until finished previous command */ +- ret = wait_till_ready(nor); +- if (ret) +- goto err; ++ ret = nor->flash_lock(nor, ofs, len); + +- status_old = read_sr(nor); ++ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_UNLOCK); ++ return ret; ++} + +- if (offset+len > mtd->size - (mtd->size / 64)) +- status_new = status_old & ~(SR_BP2 | SR_BP1 | SR_BP0); +- else if (offset+len > mtd->size - (mtd->size / 32)) +- status_new = (status_old & ~(SR_BP2 | SR_BP1)) | SR_BP0; +- else if (offset+len > mtd->size - (mtd->size / 16)) +- status_new = (status_old & ~(SR_BP2 | SR_BP0)) | SR_BP1; +- else if (offset+len > mtd->size - (mtd->size / 8)) +- status_new = (status_old & ~SR_BP2) | SR_BP1 | SR_BP0; +- else if (offset+len > mtd->size - (mtd->size / 4)) +- status_new = (status_old & ~(SR_BP0 | SR_BP1)) | SR_BP2; +- else if (offset+len > mtd->size - (mtd->size / 2)) +- status_new = (status_old & ~SR_BP1) | SR_BP2 | SR_BP0; +- else +- status_new = (status_old & ~SR_BP0) | SR_BP2 | SR_BP1; ++static int spi_nor_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) ++{ ++ struct spi_nor *nor = mtd_to_spi_nor(mtd); ++ int ret; + +- /* Only modify protection if it will not lock other areas */ +- if ((status_new & (SR_BP2 | SR_BP1 | SR_BP0)) < +- (status_old & (SR_BP2 | SR_BP1 | SR_BP0))) { +- write_enable(nor); +- ret = write_sr(nor, status_new); +- if (ret) +- goto err; +- } ++ ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_UNLOCK); ++ if (ret) ++ return ret; + +-err: +- spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_UNLOCK); ++ ret = nor->flash_unlock(nor, ofs, len); ++ ++ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK); + return ret; + } + +-struct flash_info { +- /* JEDEC id zero means "no ID" (most older chips); otherwise it has +- * a high byte of zero plus three data bytes: the manufacturer id, +- * then a two byte device id. +- */ +- u32 jedec_id; +- u16 ext_id; ++static int spi_nor_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) ++{ ++ struct spi_nor *nor = mtd_to_spi_nor(mtd); ++ int ret; + +- /* The size listed here is what works with SPINOR_OP_SE, which isn't +- * necessarily called a "sector" by the vendor. +- */ +- unsigned sector_size; +- u16 n_sectors; ++ ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_UNLOCK); ++ if (ret) ++ return ret; + +- u16 page_size; +- u16 addr_width; ++ ret = nor->flash_is_locked(nor, ofs, len); + +- u16 flags; +-#define SECT_4K 0x01 /* SPINOR_OP_BE_4K works uniformly */ +-#define SPI_NOR_NO_ERASE 0x02 /* No erase command needed */ +-#define SST_WRITE 0x04 /* use SST byte programming */ +-#define SPI_NOR_NO_FR 0x08 /* Can't do fastread */ +-#define SECT_4K_PMC 0x10 /* SPINOR_OP_BE_4K_PMC works uniformly */ +-#define SPI_NOR_DUAL_READ 0x20 /* Flash supports Dual Read */ +-#define SPI_NOR_QUAD_READ 0x40 /* Flash supports Quad Read */ +-#define USE_FSR 0x80 /* use flag status register */ +-}; ++ spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_LOCK); ++ return ret; ++} + ++/* Used when the "_ext_id" is two bytes at most */ + #define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ +- ((kernel_ulong_t)&(struct flash_info) { \ +- .jedec_id = (_jedec_id), \ +- .ext_id = (_ext_id), \ ++ .id = { \ ++ ((_jedec_id) >> 16) & 0xff, \ ++ ((_jedec_id) >> 8) & 0xff, \ ++ (_jedec_id) & 0xff, \ ++ ((_ext_id) >> 8) & 0xff, \ ++ (_ext_id) & 0xff, \ ++ }, \ ++ .id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))), \ ++ .sector_size = (_sector_size), \ ++ .n_sectors = (_n_sectors), \ ++ .page_size = 256, \ ++ .flags = (_flags), ++ ++#define INFO6(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags) \ ++ .id = { \ ++ ((_jedec_id) >> 16) & 0xff, \ ++ ((_jedec_id) >> 8) & 0xff, \ ++ (_jedec_id) & 0xff, \ ++ ((_ext_id) >> 16) & 0xff, \ ++ ((_ext_id) >> 8) & 0xff, \ ++ (_ext_id) & 0xff, \ ++ }, \ ++ .id_len = 6, \ + .sector_size = (_sector_size), \ + .n_sectors = (_n_sectors), \ + .page_size = 256, \ +- .flags = (_flags), \ +- }) ++ .flags = (_flags), + + #define CAT25_INFO(_sector_size, _n_sectors, _page_size, _addr_width, _flags) \ +- ((kernel_ulong_t)&(struct flash_info) { \ + .sector_size = (_sector_size), \ + .n_sectors = (_n_sectors), \ + .page_size = (_page_size), \ + .addr_width = (_addr_width), \ +- .flags = (_flags), \ +- }) ++ .flags = (_flags), + + /* NOTE: double check command sets and memory organization when you add + * more nor chips. This current list focusses on newer chips, which + * have been converging on command sets which including JEDEC ID. ++ * ++ * All newly added entries should describe *hardware* and should use SECT_4K ++ * (or SECT_4K_PMC) if hardware supports erasing 4 KiB sectors. For usage ++ * scenarios excluding small sectors there is config option that can be ++ * disabled: CONFIG_MTD_SPI_NOR_USE_4K_SECTORS. ++ * For historical (and compatibility) reasons (before we got above config) some ++ * old entries may be missing 4K flag. + */ +-static const struct spi_device_id spi_nor_ids[] = { ++static const struct flash_info spi_nor_ids[] = { + /* Atmel -- some are (confusingly) marketed as "DataFlash" */ + { "at25fs010", INFO(0x1f6601, 0, 32 * 1024, 4, SECT_4K) }, + { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) }, +@@ -499,6 +684,7 @@ static const struct spi_device_id spi_no + { "en25q64", INFO(0x1c3017, 0, 64 * 1024, 128, SECT_4K) }, + { "en25qh128", INFO(0x1c7018, 0, 64 * 1024, 256, 0) }, + { "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512, 0) }, ++ { "en25s64", INFO(0x1c3817, 0, 64 * 1024, 128, SECT_4K) }, + + /* ESMT */ + { "f25l32pa", INFO(0x8c2016, 0, 64 * 1024, 64, SECT_4K) }, +@@ -507,16 +693,24 @@ static const struct spi_device_id spi_no + { "mr25h256", CAT25_INFO( 32 * 1024, 1, 256, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, + { "mr25h10", CAT25_INFO(128 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, + ++ /* Fujitsu */ ++ { "mb85rs1mt", INFO(0x047f27, 0, 128 * 1024, 1, SPI_NOR_NO_ERASE) }, ++ + /* GigaDevice */ + { "gd25q32", INFO(0xc84016, 0, 64 * 1024, 64, SECT_4K) }, + { "gd25q64", INFO(0xc84017, 0, 64 * 1024, 128, SECT_4K) }, ++ { "gd25q128", INFO(0xc84018, 0, 64 * 1024, 256, SECT_4K) }, + + /* Intel/Numonyx -- xxxs33b */ + { "160s33b", INFO(0x898911, 0, 64 * 1024, 32, 0) }, + { "320s33b", INFO(0x898912, 0, 64 * 1024, 64, 0) }, + { "640s33b", INFO(0x898913, 0, 64 * 1024, 128, 0) }, + ++ /* ISSI */ ++ { "is25cd512", INFO(0x7f9d20, 0, 32 * 1024, 2, SECT_4K) }, ++ + /* Macronix */ ++ { "mx25l512e", INFO(0xc22010, 0, 64 * 1024, 1, SECT_4K) }, + { "mx25l2005a", INFO(0xc22012, 0, 64 * 1024, 4, SECT_4K) }, + { "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) }, + { "mx25l8005", INFO(0xc22014, 0, 64 * 1024, 16, 0) }, +@@ -524,6 +718,7 @@ static const struct spi_device_id spi_no + { "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 0) }, + { "mx25l3255e", INFO(0xc29e16, 0, 64 * 1024, 64, SECT_4K) }, + { "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 0) }, ++ { "mx25u6435f", INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) }, + { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) }, + { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) }, + { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) }, +@@ -532,13 +727,16 @@ static const struct spi_device_id spi_no + { "mx66l1g55g", INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) }, + + /* Micron */ +- { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, 0) }, +- { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, 0) }, +- { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, 0) }, +- { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K) }, +- { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K) }, +- { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, USE_FSR) }, +- { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, USE_FSR) }, ++ { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) }, ++ { "n25q032a", INFO(0x20bb16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) }, ++ { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) }, ++ { "n25q064a", INFO(0x20bb17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) }, ++ { "n25q128a11", INFO(0x20bb18, 0, 64 * 1024, 256, SPI_NOR_QUAD_READ) }, ++ { "n25q128a13", INFO(0x20ba18, 0, 64 * 1024, 256, SPI_NOR_QUAD_READ) }, ++ { "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K | SPI_NOR_QUAD_READ) }, ++ { "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, ++ { "n25q512ax3", INFO(0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, ++ { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) }, + + /* PMC */ + { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) }, +@@ -549,23 +747,28 @@ static const struct spi_device_id spi_no + * for the chips listed here (without boot sectors). + */ + { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, +- { "s25sl064p", INFO(0x010216, 0x4d00, 64 * 1024, 128, 0) }, ++ { "s25sl064p", INFO(0x010216, 0x4d00, 64 * 1024, 128, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "s25fl256s0", INFO(0x010219, 0x4d00, 256 * 1024, 128, 0) }, + { "s25fl256s1", INFO(0x010219, 0x4d01, 64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "s25fl512s", INFO(0x010220, 0x4d00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "s70fl01gs", INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) }, + { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) }, + { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) }, +- { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) }, +- { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, 0) }, ++ { "s25fl128s", INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) }, ++ { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, ++ { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8, 0) }, + { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16, 0) }, + { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32, 0) }, + { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) }, + { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) }, +- { "s25fl008k", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) }, +- { "s25fl016k", INFO(0xef4015, 0, 64 * 1024, 32, SECT_4K) }, ++ { "s25fl004k", INFO(0xef4013, 0, 64 * 1024, 8, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, ++ { "s25fl008k", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, ++ { "s25fl016k", INFO(0xef4015, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "s25fl064k", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, ++ { "s25fl132k", INFO(0x014016, 0, 64 * 1024, 64, SECT_4K) }, ++ { "s25fl164k", INFO(0x014017, 0, 64 * 1024, 128, SECT_4K) }, ++ { "s25fl204k", INFO(0x014013, 0, 64 * 1024, 8, SECT_4K | SPI_NOR_DUAL_READ) }, + + /* SST -- large erase sizes are "overlays", "sectors" are 4K */ + { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) }, +@@ -576,7 +779,10 @@ static const struct spi_device_id spi_no + { "sst25wf512", INFO(0xbf2501, 0, 64 * 1024, 1, SECT_4K | SST_WRITE) }, + { "sst25wf010", INFO(0xbf2502, 0, 64 * 1024, 2, SECT_4K | SST_WRITE) }, + { "sst25wf020", INFO(0xbf2503, 0, 64 * 1024, 4, SECT_4K | SST_WRITE) }, ++ { "sst25wf020a", INFO(0x621612, 0, 64 * 1024, 4, SECT_4K) }, ++ { "sst25wf040b", INFO(0x621613, 0, 64 * 1024, 8, SECT_4K) }, + { "sst25wf040", INFO(0xbf2504, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) }, ++ { "sst25wf080", INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) }, + + /* ST Microelectronics -- newer production may have feature updates */ + { "m25p05", INFO(0x202010, 0, 32 * 1024, 2, 0) }, +@@ -588,7 +794,6 @@ static const struct spi_device_id spi_no + { "m25p32", INFO(0x202016, 0, 64 * 1024, 64, 0) }, + { "m25p64", INFO(0x202017, 0, 64 * 1024, 128, 0) }, + { "m25p128", INFO(0x202018, 0, 256 * 1024, 64, 0) }, +- { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, 0) }, + + { "m25p05-nonjedec", INFO(0, 0, 32 * 1024, 2, 0) }, + { "m25p10-nonjedec", INFO(0, 0, 32 * 1024, 4, 0) }, +@@ -616,6 +821,7 @@ static const struct spi_device_id spi_no + { "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) }, + + /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ ++ { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) }, + { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, + { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) }, + { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) }, +@@ -623,9 +829,11 @@ static const struct spi_device_id spi_no + { "w25x16", INFO(0xef3015, 0, 64 * 1024, 32, SECT_4K) }, + { "w25x32", INFO(0xef3016, 0, 64 * 1024, 64, SECT_4K) }, + { "w25q32", INFO(0xef4016, 0, 64 * 1024, 64, SECT_4K) }, +- { "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, SECT_4K) }, ++ { "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) }, + { "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) }, ++ { "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, ++ { "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, + { "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) }, + { "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) }, + { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) }, +@@ -640,35 +848,27 @@ static const struct spi_device_id spi_no + { }, + }; + +-static const struct spi_device_id *spi_nor_read_id(struct spi_nor *nor) ++static const struct flash_info *spi_nor_read_id(struct spi_nor *nor) + { + int tmp; +- u8 id[5]; +- u32 jedec; +- u16 ext_jedec; +- struct flash_info *info; ++ u8 id[SPI_NOR_MAX_ID_LEN]; ++ const struct flash_info *info; + +- tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, 5); ++ tmp = nor->read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN); + if (tmp < 0) { + dev_dbg(nor->dev, " error %d reading JEDEC ID\n", tmp); + return ERR_PTR(tmp); + } +- jedec = id[0]; +- jedec = jedec << 8; +- jedec |= id[1]; +- jedec = jedec << 8; +- jedec |= id[2]; +- +- ext_jedec = id[3] << 8 | id[4]; + + for (tmp = 0; tmp < ARRAY_SIZE(spi_nor_ids) - 1; tmp++) { +- info = (void *)spi_nor_ids[tmp].driver_data; +- if (info->jedec_id == jedec) { +- if (info->ext_id == 0 || info->ext_id == ext_jedec) ++ info = &spi_nor_ids[tmp]; ++ if (info->id_len) { ++ if (!memcmp(info->id, id, info->id_len)) + return &spi_nor_ids[tmp]; + } + } +- dev_err(nor->dev, "unrecognized JEDEC id %06x\n", jedec); ++ dev_err(nor->dev, "unrecognized JEDEC id bytes: %02x, %2x, %2x\n", ++ id[0], id[1], id[2]); + return ERR_PTR(-ENODEV); + } + +@@ -703,11 +903,6 @@ static int sst_write(struct mtd_info *mt + if (ret) + return ret; + +- /* Wait until finished previous write command. */ +- ret = wait_till_ready(nor); +- if (ret) +- goto time_out; +- + write_enable(nor); + + nor->sst_write_second = false; +@@ -719,7 +914,7 @@ static int sst_write(struct mtd_info *mt + + /* write one byte. */ + nor->write(nor, to, 1, retlen, buf); +- ret = wait_till_ready(nor); ++ ret = spi_nor_wait_till_ready(nor); + if (ret) + goto time_out; + } +@@ -731,7 +926,7 @@ static int sst_write(struct mtd_info *mt + + /* write two bytes. */ + nor->write(nor, to, 2, retlen, buf + actual); +- ret = wait_till_ready(nor); ++ ret = spi_nor_wait_till_ready(nor); + if (ret) + goto time_out; + to += 2; +@@ -740,7 +935,7 @@ static int sst_write(struct mtd_info *mt + nor->sst_write_second = false; + + write_disable(nor); +- ret = wait_till_ready(nor); ++ ret = spi_nor_wait_till_ready(nor); + if (ret) + goto time_out; + +@@ -751,7 +946,7 @@ static int sst_write(struct mtd_info *mt + nor->program_opcode = SPINOR_OP_BP; + nor->write(nor, to, 1, retlen, buf + actual); + +- ret = wait_till_ready(nor); ++ ret = spi_nor_wait_till_ready(nor); + if (ret) + goto time_out; + write_disable(nor); +@@ -779,11 +974,6 @@ static int spi_nor_write(struct mtd_info + if (ret) + return ret; + +- /* Wait until finished previous write command. */ +- ret = wait_till_ready(nor); +- if (ret) +- goto write_err; +- + write_enable(nor); + + page_offset = to & (nor->page_size - 1); +@@ -802,16 +992,20 @@ static int spi_nor_write(struct mtd_info + if (page_size > nor->page_size) + page_size = nor->page_size; + +- wait_till_ready(nor); ++ ret = spi_nor_wait_till_ready(nor); ++ if (ret) ++ goto write_err; ++ + write_enable(nor); + + nor->write(nor, to + i, page_size, retlen, buf + i); + } + } + ++ ret = spi_nor_wait_till_ready(nor); + write_err: + spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE); +- return 0; ++ return ret; + } + + static int macronix_quad_enable(struct spi_nor *nor) +@@ -821,10 +1015,9 @@ static int macronix_quad_enable(struct s + val = read_sr(nor); + write_enable(nor); + +- nor->cmd_buf[0] = val | SR_QUAD_EN_MX; +- nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 1, 0); ++ write_sr(nor, val | SR_QUAD_EN_MX); + +- if (wait_till_ready(nor)) ++ if (spi_nor_wait_till_ready(nor)) + return 1; + + ret = read_sr(nor); +@@ -847,7 +1040,7 @@ static int write_sr_cr(struct spi_nor *n + nor->cmd_buf[0] = val & 0xff; + nor->cmd_buf[1] = (val >> 8); + +- return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2, 0); ++ return nor->write_reg(nor, SPINOR_OP_WRSR, nor->cmd_buf, 2); + } + + static int spansion_quad_enable(struct spi_nor *nor) +@@ -874,18 +1067,20 @@ static int spansion_quad_enable(struct s + return 0; + } + +-static int set_quad_mode(struct spi_nor *nor, u32 jedec_id) ++static int set_quad_mode(struct spi_nor *nor, const struct flash_info *info) + { + int status; + +- switch (JEDEC_MFR(jedec_id)) { +- case CFI_MFR_MACRONIX: ++ switch (JEDEC_MFR(info)) { ++ case SNOR_MFR_MACRONIX: + status = macronix_quad_enable(nor); + if (status) { + dev_err(nor->dev, "Macronix quad-read not enabled\n"); + return -EINVAL; + } + return status; ++ case SNOR_MFR_MICRON: ++ return 0; + default: + status = spansion_quad_enable(nor); + if (status) { +@@ -904,21 +1099,15 @@ static int spi_nor_check(struct spi_nor + return -EINVAL; + } + +- if (!nor->read_id) +- nor->read_id = spi_nor_read_id; +- if (!nor->wait_till_ready) +- nor->wait_till_ready = spi_nor_wait_till_ready; +- + return 0; + } + + int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode) + { +- const struct spi_device_id *id = NULL; +- struct flash_info *info; ++ const struct flash_info *info = NULL; + struct device *dev = nor->dev; +- struct mtd_info *mtd = nor->mtd; +- struct device_node *np = dev->of_node; ++ struct mtd_info *mtd = &nor->mtd; ++ struct device_node *np = nor->flash_node; + int ret; + int i; + +@@ -926,19 +1115,25 @@ int spi_nor_scan(struct spi_nor *nor, co + if (ret) + return ret; + +- id = spi_nor_match_id(name); +- if (!id) ++ if (name) ++ info = spi_nor_match_id(name); ++ /* Try to auto-detect if chip name wasn't specified or not found */ ++ if (!info) ++ info = spi_nor_read_id(nor); ++ if (IS_ERR_OR_NULL(info)) + return -ENOENT; + +- info = (void *)id->driver_data; +- +- if (info->jedec_id) { +- const struct spi_device_id *jid; ++ /* ++ * If caller has specified name of flash model that can normally be ++ * detected using JEDEC, let's verify it. ++ */ ++ if (name && info->id_len) { ++ const struct flash_info *jinfo; + +- jid = nor->read_id(nor); +- if (IS_ERR(jid)) { +- return PTR_ERR(jid); +- } else if (jid != id) { ++ jinfo = spi_nor_read_id(nor); ++ if (IS_ERR(jinfo)) { ++ return PTR_ERR(jinfo); ++ } else if (jinfo != info) { + /* + * JEDEC knows better, so overwrite platform ID. We + * can't trust partitions any longer, but we'll let +@@ -947,28 +1142,28 @@ int spi_nor_scan(struct spi_nor *nor, co + * information, even if it's not 100% accurate. + */ + dev_warn(dev, "found %s, expected %s\n", +- jid->name, id->name); +- id = jid; +- info = (void *)jid->driver_data; ++ jinfo->name, info->name); ++ info = jinfo; + } + } + + mutex_init(&nor->lock); + + /* +- * Atmel, SST and Intel/Numonyx serial nor tend to power +- * up with the software protection bits set ++ * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up ++ * with the software protection bits set + */ + +- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL || +- JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL || +- JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) { ++ if (JEDEC_MFR(info) == SNOR_MFR_ATMEL || ++ JEDEC_MFR(info) == SNOR_MFR_INTEL || ++ JEDEC_MFR(info) == SNOR_MFR_SST) { + write_enable(nor); + write_sr(nor, 0); + } + + if (!mtd->name) + mtd->name = dev_name(dev); ++ mtd->priv = nor; + mtd->type = MTD_NORFLASH; + mtd->writesize = 1; + mtd->flags = MTD_CAP_NORFLASH; +@@ -976,10 +1171,17 @@ int spi_nor_scan(struct spi_nor *nor, co + mtd->_erase = spi_nor_erase; + mtd->_read = spi_nor_read; + +- /* nor protection support for STmicro chips */ +- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ST) { ++ /* NOR protection support for STmicro/Micron chips and similar */ ++ if (JEDEC_MFR(info) == SNOR_MFR_MICRON) { ++ nor->flash_lock = stm_lock; ++ nor->flash_unlock = stm_unlock; ++ nor->flash_is_locked = stm_is_locked; ++ } ++ ++ if (nor->flash_lock && nor->flash_unlock && nor->flash_is_locked) { + mtd->_lock = spi_nor_lock; + mtd->_unlock = spi_nor_unlock; ++ mtd->_is_locked = spi_nor_is_locked; + } + + /* sst nor chips use AAI word program */ +@@ -988,9 +1190,8 @@ int spi_nor_scan(struct spi_nor *nor, co + else + mtd->_write = spi_nor_write; + +- if ((info->flags & USE_FSR) && +- nor->wait_till_ready == spi_nor_wait_till_ready) +- nor->wait_till_ready = spi_nor_wait_till_fsr_ready; ++ if (info->flags & USE_FSR) ++ nor->flags |= SNOR_F_USE_FSR; + + #ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS + /* prefer "small sector" erase if possible */ +@@ -1031,7 +1232,7 @@ int spi_nor_scan(struct spi_nor *nor, co + + /* Quad/Dual-read mode takes precedence over fast/normal */ + if (mode == SPI_NOR_QUAD && info->flags & SPI_NOR_QUAD_READ) { +- ret = set_quad_mode(nor, info->jedec_id); ++ ret = set_quad_mode(nor, info); + if (ret) { + dev_err(dev, "quad mode not supported\n"); + return ret; +@@ -1067,7 +1268,7 @@ int spi_nor_scan(struct spi_nor *nor, co + else if (mtd->size > 0x1000000) { + /* enable 4-byte addressing if the device exceeds 16MiB */ + nor->addr_width = 4; +- if (JEDEC_MFR(info->jedec_id) == CFI_MFR_AMD) { ++ if (JEDEC_MFR(info) == SNOR_MFR_SPANSION) { + /* Dedicated 4-byte command set */ + switch (nor->flash_read) { + case SPI_NOR_QUAD: +@@ -1088,14 +1289,14 @@ int spi_nor_scan(struct spi_nor *nor, co + nor->erase_opcode = SPINOR_OP_SE_4B; + mtd->erasesize = info->sector_size; + } else +- set_4byte(nor, info->jedec_id, 1); ++ set_4byte(nor, info, 1); + } else { + nor->addr_width = 3; + } + + nor->read_dummy = spi_nor_read_dummy_cycles(nor); + +- dev_info(dev, "%s (%lld Kbytes)\n", id->name, ++ dev_info(dev, "%s (%lld Kbytes)\n", info->name, + (long long)mtd->size >> 10); + + dev_dbg(dev, +@@ -1118,11 +1319,11 @@ int spi_nor_scan(struct spi_nor *nor, co + } + EXPORT_SYMBOL_GPL(spi_nor_scan); + +-static const struct spi_device_id *spi_nor_match_id(const char *name) ++static const struct flash_info *spi_nor_match_id(const char *name) + { +- const struct spi_device_id *id = spi_nor_ids; ++ const struct flash_info *id = spi_nor_ids; + +- while (id->name[0]) { ++ while (id->name) { + if (!strcmp(name, id->name)) + return id; + id++; +--- a/include/linux/mtd/spi-nor.h ++++ b/include/linux/mtd/spi-nor.h +@@ -10,6 +10,23 @@ + #ifndef __LINUX_MTD_SPI_NOR_H + #define __LINUX_MTD_SPI_NOR_H + ++#include ++#include ++ ++/* ++ * Manufacturer IDs ++ * ++ * The first byte returned from the flash after sending opcode SPINOR_OP_RDID. ++ * Sometimes these are the same as CFI IDs, but sometimes they aren't. ++ */ ++#define SNOR_MFR_ATMEL CFI_MFR_ATMEL ++#define SNOR_MFR_INTEL CFI_MFR_INTEL ++#define SNOR_MFR_MICRON CFI_MFR_ST /* ST Micro <--> Micron */ ++#define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX ++#define SNOR_MFR_SPANSION CFI_MFR_AMD ++#define SNOR_MFR_SST CFI_MFR_SST ++#define SNOR_MFR_WINBOND 0xef /* Also used by some Spansion */ ++ + /* + * Note on opcode nomenclature: some opcodes have a format like + * SPINOR_OP_FUNCTION{4,}_x_y_z. The numbers x, y, and z stand for the number +@@ -56,22 +73,29 @@ + /* Used for Spansion flashes only. */ + #define SPINOR_OP_BRWR 0x17 /* Bank register write */ + ++/* Used for Micron flashes only. */ ++#define SPINOR_OP_RD_EVCR 0x65 /* Read EVCR register */ ++#define SPINOR_OP_WD_EVCR 0x61 /* Write EVCR register */ ++ + /* Status Register bits. */ +-#define SR_WIP 1 /* Write in progress */ +-#define SR_WEL 2 /* Write enable latch */ ++#define SR_WIP BIT(0) /* Write in progress */ ++#define SR_WEL BIT(1) /* Write enable latch */ + /* meaning of other SR_* bits may differ between vendors */ +-#define SR_BP0 4 /* Block protect 0 */ +-#define SR_BP1 8 /* Block protect 1 */ +-#define SR_BP2 0x10 /* Block protect 2 */ +-#define SR_SRWD 0x80 /* SR write protect */ ++#define SR_BP0 BIT(2) /* Block protect 0 */ ++#define SR_BP1 BIT(3) /* Block protect 1 */ ++#define SR_BP2 BIT(4) /* Block protect 2 */ ++#define SR_SRWD BIT(7) /* SR write protect */ ++ ++#define SR_QUAD_EN_MX BIT(6) /* Macronix Quad I/O */ + +-#define SR_QUAD_EN_MX 0x40 /* Macronix Quad I/O */ ++/* Enhanced Volatile Configuration Register bits */ ++#define EVCR_QUAD_EN_MICRON BIT(7) /* Micron Quad I/O */ + + /* Flag Status Register bits */ +-#define FSR_READY 0x80 ++#define FSR_READY BIT(7) + + /* Configuration Register bits. */ +-#define CR_QUAD_EN_SPAN 0x2 /* Spansion Quad I/O */ ++#define CR_QUAD_EN_SPAN BIT(1) /* Spansion Quad I/O */ + + enum read_mode { + SPI_NOR_NORMAL = 0, +@@ -80,33 +104,6 @@ enum read_mode { + SPI_NOR_QUAD, + }; + +-/** +- * struct spi_nor_xfer_cfg - Structure for defining a Serial Flash transfer +- * @wren: command for "Write Enable", or 0x00 for not required +- * @cmd: command for operation +- * @cmd_pins: number of pins to send @cmd (1, 2, 4) +- * @addr: address for operation +- * @addr_pins: number of pins to send @addr (1, 2, 4) +- * @addr_width: number of address bytes +- * (3,4, or 0 for address not required) +- * @mode: mode data +- * @mode_pins: number of pins to send @mode (1, 2, 4) +- * @mode_cycles: number of mode cycles (0 for mode not required) +- * @dummy_cycles: number of dummy cycles (0 for dummy not required) +- */ +-struct spi_nor_xfer_cfg { +- u8 wren; +- u8 cmd; +- u8 cmd_pins; +- u32 addr; +- u8 addr_pins; +- u8 addr_width; +- u8 mode; +- u8 mode_pins; +- u8 mode_cycles; +- u8 dummy_cycles; +-}; +- + #define SPI_NOR_MAX_CMD_SIZE 8 + enum spi_nor_ops { + SPI_NOR_OPS_READ = 0, +@@ -116,11 +113,18 @@ enum spi_nor_ops { + SPI_NOR_OPS_UNLOCK, + }; + ++enum spi_nor_option_flags { ++ SNOR_F_USE_FSR = BIT(0), ++}; ++ ++struct mtd_info; ++ + /** + * struct spi_nor - Structure for defining a the SPI NOR layer + * @mtd: point to a mtd_info structure + * @lock: the lock for the read/write/erase/lock/unlock operations + * @dev: point to a spi device, or a spi nor controller device. ++ * @flash_node: point to a device node describing this flash instance. + * @page_size: the page size of the SPI NOR + * @addr_width: number of address bytes + * @erase_opcode: the opcode for erasing a sector +@@ -129,29 +133,29 @@ enum spi_nor_ops { + * @program_opcode: the program opcode + * @flash_read: the mode of the read + * @sst_write_second: used by the SST write operation +- * @cfg: used by the read_xfer/write_xfer ++ * @flags: flag options for the current SPI-NOR (SNOR_F_*) + * @cmd_buf: used by the write_reg + * @prepare: [OPTIONAL] do some preparations for the + * read/write/erase/lock/unlock operations + * @unprepare: [OPTIONAL] do some post work after the + * read/write/erase/lock/unlock operations +- * @read_xfer: [OPTIONAL] the read fundamental primitive +- * @write_xfer: [OPTIONAL] the writefundamental primitive + * @read_reg: [DRIVER-SPECIFIC] read out the register + * @write_reg: [DRIVER-SPECIFIC] write data to the register +- * @read_id: [REPLACEABLE] read out the ID data, and find +- * the proper spi_device_id +- * @wait_till_ready: [REPLACEABLE] wait till the NOR becomes ready + * @read: [DRIVER-SPECIFIC] read data from the SPI NOR + * @write: [DRIVER-SPECIFIC] write data to the SPI NOR + * @erase: [DRIVER-SPECIFIC] erase a sector of the SPI NOR + * at the offset @offs ++ * @flash_lock: [FLASH-SPECIFIC] lock a region of the SPI NOR ++ * @flash_unlock: [FLASH-SPECIFIC] unlock a region of the SPI NOR ++ * @flash_is_locked: [FLASH-SPECIFIC] check if a region of the SPI NOR is ++ * completely locked + * @priv: the private data + */ + struct spi_nor { +- struct mtd_info *mtd; ++ struct mtd_info mtd; + struct mutex lock; + struct device *dev; ++ struct device_node *flash_node; + u32 page_size; + u8 addr_width; + u8 erase_opcode; +@@ -160,20 +164,13 @@ struct spi_nor { + u8 program_opcode; + enum read_mode flash_read; + bool sst_write_second; +- struct spi_nor_xfer_cfg cfg; ++ u32 flags; + u8 cmd_buf[SPI_NOR_MAX_CMD_SIZE]; + + int (*prepare)(struct spi_nor *nor, enum spi_nor_ops ops); + void (*unprepare)(struct spi_nor *nor, enum spi_nor_ops ops); +- int (*read_xfer)(struct spi_nor *nor, struct spi_nor_xfer_cfg *cfg, +- u8 *buf, size_t len); +- int (*write_xfer)(struct spi_nor *nor, struct spi_nor_xfer_cfg *cfg, +- u8 *buf, size_t len); + int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); +- int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len, +- int write_enable); +- const struct spi_device_id *(*read_id)(struct spi_nor *nor); +- int (*wait_till_ready)(struct spi_nor *nor); ++ int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); + + int (*read)(struct spi_nor *nor, loff_t from, + size_t len, size_t *retlen, u_char *read_buf); +@@ -181,6 +178,10 @@ struct spi_nor { + size_t len, size_t *retlen, const u_char *write_buf); + int (*erase)(struct spi_nor *nor, loff_t offs); + ++ int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len); ++ int (*flash_unlock)(struct spi_nor *nor, loff_t ofs, uint64_t len); ++ int (*flash_is_locked)(struct spi_nor *nor, loff_t ofs, uint64_t len); ++ + void *priv; + }; + diff --git a/target/linux/generic/patches-3.18/462-m25p80-mx-disable-software-protection.patch b/target/linux/generic/patches-3.18/462-m25p80-mx-disable-software-protection.patch index fef483a67d0f7c3f25a105f5f1d0faef4dfd1a38..eb99609fe29b136a2283ef347af6b1db97ad4978 100644 --- a/target/linux/generic/patches-3.18/462-m25p80-mx-disable-software-protection.patch +++ b/target/linux/generic/patches-3.18/462-m25p80-mx-disable-software-protection.patch @@ -1,10 +1,14 @@ +Disable software protection bits for Macronix flashes. + +Signed-off-by: Felix Fietkau + --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -963,6 +963,7 @@ int spi_nor_scan(struct spi_nor *nor, co +@@ -1164,6 +1164,7 @@ int spi_nor_scan(struct spi_nor *nor, co - if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL || - JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL || -+ JEDEC_MFR(info->jedec_id) == CFI_MFR_MACRONIX || - JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) { + if (JEDEC_MFR(info) == SNOR_MFR_ATMEL || + JEDEC_MFR(info) == SNOR_MFR_INTEL || ++ JEDEC_MFR(info) == SNOR_MFR_MACRONIX || + JEDEC_MFR(info) == SNOR_MFR_SST) { write_enable(nor); write_sr(nor, 0); diff --git a/target/linux/generic/patches-3.18/472-mtd-m25p80-add-support-for-Winbond-W25X05-flash.patch b/target/linux/generic/patches-3.18/472-mtd-m25p80-add-support-for-Winbond-W25X05-flash.patch deleted file mode 100644 index dca6895c1448a302f829bcfdde4842f0a000061d..0000000000000000000000000000000000000000 --- a/target/linux/generic/patches-3.18/472-mtd-m25p80-add-support-for-Winbond-W25X05-flash.patch +++ /dev/null @@ -1,20 +0,0 @@ -From eef9dfc4e821408af1af13aa0cc707fc496fb7c6 Mon Sep 17 00:00:00 2001 -From: Gabor Juhos -Date: Wed, 11 Dec 2013 19:05:59 +0100 -Subject: [PATCH] m25p80: add support for the Winbond W25X05 flash - -Signed-off-by: Gabor Juhos ---- - drivers/mtd/devices/m25p80.c | 1 + - 1 file changed, 1 insertion(+) - ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -617,6 +617,7 @@ static const struct spi_device_id spi_no - { "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) }, - - /* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */ -+ { "w25x05", INFO(0xef3010, 0, 64 * 1024, 1, SECT_4K) }, - { "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) }, - { "w25x20", INFO(0xef3012, 0, 64 * 1024, 4, SECT_4K) }, - { "w25x40", INFO(0xef3013, 0, 64 * 1024, 8, SECT_4K) }, diff --git a/target/linux/generic/patches-3.18/473-mtd-spi-nor-add-support-for-the-Macronix-MX25L512E-S.patch b/target/linux/generic/patches-3.18/473-mtd-spi-nor-add-support-for-the-Macronix-MX25L512E-S.patch deleted file mode 100644 index 9ba7a4ab2f701440e78da0f9a2e2845f68652267..0000000000000000000000000000000000000000 --- a/target/linux/generic/patches-3.18/473-mtd-spi-nor-add-support-for-the-Macronix-MX25L512E-S.patch +++ /dev/null @@ -1,21 +0,0 @@ -From 0d7388de0911c1a4fc4a8a3898ef9d0ab818ca08 Mon Sep 17 00:00:00 2001 -From: Gabor Juhos -Date: Tue, 7 Apr 2015 18:35:15 +0200 -Subject: [PATCH] mtd: spi-nor: add support for the Macronix MX25L512E SPI - flash chip - -Signed-off-by: Gabor Juhos ---- - drivers/mtd/spi-nor/spi-nor.c | 1 + - 1 file changed, 1 insertion(+) - ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -518,6 +518,7 @@ static const struct spi_device_id spi_no - { "640s33b", INFO(0x898913, 0, 64 * 1024, 128, 0) }, - - /* Macronix */ -+ { "mx25l512e", INFO(0xc22010, 0, 64 * 1024, 1, SECT_4K) }, - { "mx25l2005a", INFO(0xc22012, 0, 64 * 1024, 4, SECT_4K) }, - { "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) }, - { "mx25l8005", INFO(0xc22014, 0, 64 * 1024, 16, 0) }, diff --git a/target/linux/generic/patches-3.18/474-mtd-spi-nor-add-support-for-the-ISSI-SI25CD512-SPI-f.patch b/target/linux/generic/patches-3.18/474-mtd-spi-nor-add-support-for-the-ISSI-SI25CD512-SPI-f.patch deleted file mode 100644 index b06ac73fae3fac808067b8643ac939adc56d35cb..0000000000000000000000000000000000000000 --- a/target/linux/generic/patches-3.18/474-mtd-spi-nor-add-support-for-the-ISSI-SI25CD512-SPI-f.patch +++ /dev/null @@ -1,22 +0,0 @@ -From 34e2b403040a2f9d3ba071d95a7f42457e2950f9 Mon Sep 17 00:00:00 2001 -From: Gabor Juhos -Date: Tue, 7 Apr 2015 18:35:15 +0200 -Subject: [PATCH] mtd: spi-nor: add support for the ISSI SI25CD512 SPI flash - -Signed-off-by: Gabor Juhos ---- - drivers/mtd/spi-nor/spi-nor.c | 3 +++ - 1 file changed, 3 insertions(+) - ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -517,6 +517,9 @@ static const struct spi_device_id spi_no - { "320s33b", INFO(0x898912, 0, 64 * 1024, 64, 0) }, - { "640s33b", INFO(0x898913, 0, 64 * 1024, 128, 0) }, - -+ /* ISSI */ -+ { "is25cd512", INFO(0x7f9d20, 0, 32 * 1024, 2, SECT_4K) }, -+ - /* Macronix */ - { "mx25l512e", INFO(0xc22010, 0, 64 * 1024, 1, SECT_4K) }, - { "mx25l2005a", INFO(0xc22012, 0, 64 * 1024, 4, SECT_4K) }, diff --git a/target/linux/lantiq/patches-3.18/0022-MTD-m25p80-allow-loading-mtd-name-from-OF.patch b/target/linux/lantiq/patches-3.18/0022-MTD-m25p80-allow-loading-mtd-name-from-OF.patch deleted file mode 100644 index 203eb9495efe583abc1e7adc21f9c6d0e61e4e29..0000000000000000000000000000000000000000 --- a/target/linux/lantiq/patches-3.18/0022-MTD-m25p80-allow-loading-mtd-name-from-OF.patch +++ /dev/null @@ -1,44 +0,0 @@ -From 4400e1f593ea40a51912128adb4f53d59e62cad8 Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Wed, 10 Sep 2014 22:40:18 +0200 -Subject: [PATCH 22/36] MTD: m25p80: allow loading mtd name from OF - -In accordance with the physmap flash we should honour the linux,mtd-name -property when deciding what name the mtd device has. - -Signed-off-by: Thomas Langer -Signed-off-by: John Crispin ---- - drivers/mtd/devices/m25p80.c | 6 ++++++ - 1 file changed, 6 insertions(+) - ---- a/drivers/mtd/devices/m25p80.c -+++ b/drivers/mtd/devices/m25p80.c -@@ -19,6 +19,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -198,6 +199,10 @@ static int m25p_probe(struct spi_device - enum read_mode mode = SPI_NOR_NORMAL; - char *flash_name = NULL; - int ret; -+ const char __maybe_unused *of_mtd_name = NULL; -+ -+ of_property_read_string(spi->dev.of_node, -+ "linux,mtd-name", &of_mtd_name); - - data = dev_get_platdata(&spi->dev); - -@@ -229,6 +234,8 @@ static int m25p_probe(struct spi_device - - if (data && data->name) - flash->mtd.name = data->name; -+ else if (of_mtd_name) -+ flash->mtd.name = of_mtd_name; - - /* For some (historical?) reason many platforms provide two different - * names in flash_platform_data: "name" and "type". Quite often name is diff --git a/target/linux/mpc85xx/files/arch/powerpc/boot/dts/tl-wdr4900-v1.dts b/target/linux/mpc85xx/files/arch/powerpc/boot/dts/tl-wdr4900-v1.dts index 2beb39cf1f2b22d99207b2298bd550a71c8d7666..21f823d57ca1b7b072e060dd0460ffd4b251ec77 100644 --- a/target/linux/mpc85xx/files/arch/powerpc/boot/dts/tl-wdr4900-v1.dts +++ b/target/linux/mpc85xx/files/arch/powerpc/boot/dts/tl-wdr4900-v1.dts @@ -37,7 +37,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "spansion,s25fl129p1"; + compatible = "jedec,spi-nor"; reg = <0>; spi-max-frequency = <25000000>; diff --git a/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch b/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch index 1716e1cc499ede404c509a40370ff6fdeec0f1dc..8dc181afb84e4932b73b4a7a45daadb0da78ca20 100644 --- a/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch +++ b/target/linux/ramips/patches-3.18/0044-mtd-add-chunked-read-io-to-m25p80.patch @@ -1,33 +1,18 @@ ---- a/drivers/mtd/devices/m25p80.c -+++ b/drivers/mtd/devices/m25p80.c -@@ -19,6 +19,7 @@ - #include - #include - #include -+#include - - #include - #include -@@ -32,6 +33,7 @@ struct m25p { - struct spi_device *spi; - struct spi_nor spi_nor; - struct mtd_info mtd; -+ u16 chunk_size; - u8 command[MAX_CMD_SIZE]; - }; - -@@ -157,6 +159,61 @@ static int m25p80_read(struct spi_nor *n - return 0; +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -1016,6 +1016,66 @@ write_err: + return ret; } -+static void m25p80_chunked_write(struct spi_nor *nor, loff_t _from, size_t _len, -+ size_t *_retlen, const u_char *_buf) ++static int spi_nor_chunked_write(struct mtd_info *mtd, loff_t _to, size_t _len, ++ size_t *_retlen, const u_char *_buf) +{ -+ struct m25p *flash = nor->priv; ++ struct spi_nor *nor = mtd_to_spi_nor(mtd); + int chunk_size; + int retlen = 0; ++ int ret; + -+ chunk_size = flash->chunk_size; ++ chunk_size = nor->chunk_size; + if (!chunk_size) + chunk_size = _len; + @@ -37,35 +22,39 @@ + while (retlen < _len) { + size_t len = min_t(int, chunk_size, _len - retlen); + const u_char *buf = _buf + retlen; -+ loff_t from = _from + retlen; -+ -+ nor->wait_till_ready(nor); -+ nor->write_reg(nor, SPINOR_OP_WREN, NULL, 0, 0); ++ loff_t to = _to + retlen; + -+ m25p80_write(nor, from, len, &retlen, buf); ++ if (nor->flags & SNOR_F_SST) ++ ret = sst_write(mtd, to, len, &retlen, buf); ++ else ++ ret = spi_nor_write(mtd, to, len, &retlen, buf); ++ if (ret) ++ return ret; + } ++ + *_retlen += retlen; ++ return 0; +} + -+static int m25p80_chunked_read(struct spi_nor *nor, loff_t _from, size_t _len, -+ size_t *_retlen, u_char *_buf) ++static int spi_nor_chunked_read(struct mtd_info *mtd, loff_t _from, size_t _len, ++ size_t *_retlen, u_char *_buf) +{ -+ struct m25p *flash = nor->priv; ++ struct spi_nor *nor = mtd_to_spi_nor(mtd); + int chunk_size; ++ int ret; + -+ chunk_size = flash->chunk_size; ++ chunk_size = nor->chunk_size; + if (!chunk_size) + chunk_size = _len; + + *_retlen = 0; -+ + while (*_retlen < _len) { + size_t len = min_t(int, chunk_size, _len - *_retlen); + u_char *buf = _buf + *_retlen; + loff_t from = _from + *_retlen; + int retlen = 0; -+ int ret = m25p80_read(nor, from, len, &retlen, buf); + ++ ret = spi_nor_read(mtd, from, len, &retlen, buf); + if (ret) + return ret; + @@ -75,29 +64,60 @@ + return 0; +} + - static int m25p80_erase(struct spi_nor *nor, loff_t offset) + static int macronix_quad_enable(struct spi_nor *nor) { - struct m25p *flash = nor->priv; -@@ -197,6 +254,7 @@ static int m25p_probe(struct spi_device - struct spi_nor *nor; - enum read_mode mode = SPI_NOR_NORMAL; - char *flash_name = NULL; -+ u32 val; - int ret; - - data = dev_get_platdata(&spi->dev); -@@ -244,6 +302,14 @@ static int m25p_probe(struct spi_device - if (ret) - return ret; + int ret, val; +@@ -1197,10 +1257,12 @@ int spi_nor_scan(struct spi_nor *nor, co + } -+ if (spi->dev.of_node && -+ !of_property_read_u32(spi->dev.of_node, "m25p,chunked-io", &val)) { -+ dev_warn(&spi->dev, "using chunked io\n"); -+ nor->read = m25p80_chunked_read; -+ nor->write = m25p80_chunked_write; -+ flash->chunk_size = val; + /* sst nor chips use AAI word program */ +- if (info->flags & SST_WRITE) ++ if (info->flags & SST_WRITE) { + mtd->_write = sst_write; +- else ++ nor->flags |= SNOR_F_SST; ++ } else { + mtd->_write = spi_nor_write; + } + + if (info->flags & USE_FSR) + nor->flags |= SNOR_F_USE_FSR; +@@ -1228,11 +1290,20 @@ int spi_nor_scan(struct spi_nor *nor, co + mtd->writebufsize = nor->page_size; + + if (np) { ++ u32 val; + - ppdata.of_node = spi->dev.of_node; + /* If we were instantiated by DT, use it */ + if (of_property_read_bool(np, "m25p,fast-read")) + nor->flash_read = SPI_NOR_FAST; + else + nor->flash_read = SPI_NOR_NORMAL; ++ ++ if (!of_property_read_u32(np, "m25p,chunked-io", &val)) { ++ dev_info(dev, "using chunked io (size=%d)\n", val); ++ mtd->_read = spi_nor_chunked_read; ++ mtd->_write = spi_nor_chunked_write; ++ nor->chunk_size = val; ++ } + } else { + /* If we weren't instantiated by DT, default to fast-read */ + nor->flash_read = SPI_NOR_FAST; +--- a/include/linux/mtd/spi-nor.h ++++ b/include/linux/mtd/spi-nor.h +@@ -115,6 +115,7 @@ enum spi_nor_ops { + + enum spi_nor_option_flags { + SNOR_F_USE_FSR = BIT(0), ++ SNOR_F_SST = BIT(1), + }; - return mtd_device_parse_register(&flash->mtd, NULL, &ppdata, + struct mtd_info; +@@ -157,6 +158,7 @@ struct spi_nor { + struct device *dev; + struct device_node *flash_node; + u32 page_size; ++ u16 chunk_size; + u8 addr_width; + u8 erase_opcode; + u8 read_opcode;